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प्रश्न
Draw a neat labeled diagram to show the direction of two forces acting on a body to produce rotation in it. Also mark the point about which rotation takes place.
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उत्तर
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संबंधित प्रश्न
Differentiate between energy and power.
State the conditions of equilibrium for a rigid body.
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
Is power a scalar quantity?
Name the type of energy possessed by a
(i) stretched catapult (ii) hot iron
(iii) wound up clock
A cricket ball is thrown up from the earth's surface. What happens to its P.E.
(a) during the motion
(b) at the highest point?
Fill in the boxe to show the corresponding energy transformation.
A girl of mass 40 kg runs a height of 80 stairs, each 25 cm high with a load of 20 kg on her head in 25 sec. If g is 10 m/s2, find:
(i) Gravitational force acting on the girl.
(ii) Work done by her.
(iii) Useful work done by her.
(iv) Her power in watt.
